Mark Cerny has released some information!!
Things that stand out to me:
The GPU, a custom variant of Radeon’s Navi family, will support ray tracing.
The current PSVR headset is compatible with the new console.
The next-gen console will support 8K graphics
Cerny claims that it has a raw bandwidth higher than any SSD available for PCs
Because it’s based in part on the PS4’s architecture, it will also be backward-compatible with games for that console.